Venustoise is a Super Pokémon that debuted on episode 20 of the Pokémon anime. Its components, which are Blastoise and Venusaur, were created by a Gastly, when he was confronted by Ash's Squirtle and Bulbasaur. The Gastly fused Blastoise and Venusaur together, thus making this Pokémon Fusion. It spawned an interest of people making their own Pokémon Fusions. It has become very popular since its appearance.